Stitched buffing wheel



June 24, 1930. H. ZIMMERMAN STITCHED BUFFING WHEEL Filed March 14, 19272 Sheets-Sheet 1 June 24, 1930. H. ZIMMERMAN STITCHED BUFFING WHEELFiled Mafch 14, 1927 2 Sheets-Sheet 2 I l VII/l atented June 24, 1930.

UNITED HARRY ZIMMERMAN, OF LAKELAND, FLORIDA, ASSIGNOR, BY MESNEASSIGNMENTS, TO THE YERGES MANUFACTURING COMPANY, OF FREMONT, OHIO, ACORPORATION OF OHIO STITCHED BUFFING WHEEL Application filed March 14,1927. Serial No. 175,408.

This invention relates to fabric buffing sections to be assembled intowheels.

This invention has utility when incorporated in sewed fabric buffingdisk sections wherein the sewing or stitching lines are in tion havingmounted thereon bufiing disks under the invention herein;

Fig. 2 is a side elevation, with parts broken away, of a plurality ofplies of warp and woof fabric assembled by partial stitch- 5 ing into abufiing section;

Fig. 3 is a side elevation of a buffing section having star or diamondformed stitching, the stitching being open for amore soft or loose typeof buffing section; d

Fig. 4 is a side elevation of a buffing section of a more densely sewedor harder type than the bufling section of Fig. 3;

a Fig. 5 is a view in side elevation, with parts broken away, showingbias strip formed bufling section. showing diamond or star closed pocketsewing for the assembly of the plies therein as well as the Greek crossopen pocket type of sewing;

Fig. 6 is a view of'a bufl having addiiiional stitching thereon fromthat shown in Fig. 7 is the buff of Fig. 6 with a third series ofstitching thereon;

Fig. 8 is a buff with additional diameters over the showing of Fig. 2;

Fig. 9 shows the parallel stitching on a buff over such diameterstitchings of Fig. 8;

Fig. 10 shows the additional parallel series of .stitchings on thestitching of the buff of Fig. 9;

Fig. 11 shows radial instead of diametrical stitching; I

Fig. 12 shows a first series of stitchingsas to the radial stitching ofthe buff. of

Fig. 11; v

. Fig. 13 Thows a second series of stitchin 's partia ly overlappin thestitchin s of th: buff of Fig. 12; and a p b Fig. 14 shows a thirdseries of stitchings partially overlapping the stitchings of 12, andFig. 13.

Mounted on base 1 are bearings 2, 3, carrying shaft 4 on which ismounted pulley 5 driven by belt (3. The shaft 4, as extendin through thebearing 2 has thereon collar and a plurality of bufling sections 8 heldby, collar 9 as set up thereagainst by nut 10 on threaded. terminalportion 11 of this buffing jack shaft 4. Upon its opposite end oroutboard from the bearing 3 this shaft 4 is shown as having fixedthereon additional collar 7 with a pair of buffing disk sections 8incompletely assembled so that this does not build up to form a wheel asyet, or as shown at the left of Fig. 1.

Portions of fabric, as canvas, may have sections 12, 13, 1 1, 15,thereof superposed in general form to provide disks with the warp andWoof of adjacent buffing portions offset or staggered initially, and mayhave a plurality of diameter stitchings 16 intersect axially of thesection. Inaccordance with the invention herein, additional stitchinglines 17 is one parallel series and lines 18 is a perpendicularlydisposed series forming a Greek cross stitching assembly for the disks.Additionally'and obliquely disposed thereto, may be third series ofparallel stitching 19 having perpendicular thereto parallelstitchinglines 20 which are shown as coop- --erati-ve with the similar-stitchings17, 18, in

and assembling such fiat wrapping by stitchings 23, 24, and with eachother by diametrical stitching, such may be faced by a single ply fabricdisk 25 with a desired spacing of these diiferent series of parallelstitchings in eflecting the diamond shape pocket for mations.

The bufling sections are primarily assembled by diametrical stitchings16 or radial stitchings 26. After such primary stitching, which may becontinuous through a plurality of adjacent sections, there may besecondary stitching branching from such primary stitching diverging awayfrom the axis of the disk of the bud section with the acute or obtuseangle toward the disk center or away from the disk center.

The showing in Figs. 6, 7, is of obtuse angle type of V-nestedstitchings. The showing in Figs. 9, 10, is of acute angle nestedstitchings, while the showing in Figs. 12, 13, 14, is of obtuse anglenested stitchings. In the building up from the second series ofstitchings for the overlapping series of stitchings as the tertiaryseries, such overlapping is shown as complete diamond shaped pocketsin'the structures of Figs. 4,.

5, 7, 10. In the development of the nested V-stitching for producing thenested V- pockets such are parallel to the primary stitching lines 26 asradii, Fig. 11. There are parallel stitching lines 27, 28, as asecondary stitching branching from one radial stitching 26 and parallelto the adjacent radial stitchings 26. From an adjacent radial stitchingline 26 there are tertiary stitching lines 29, 30, Fig. 13, partiallyoverlapping as to the V-stitching 2'7, 28.

In completing the diamond pocket forming, branching stitching lines 31,32, from the remaining radius stitching 26 are ap plied. These pocketsare of diamond form in the various showings, with a corner of thediamond between the radial. lines in the arbor opening 21. These diamondshaped pockets from this arbor opening 21 are in diverging radial serieswith symmetrical series of pockets in their radial extent overlapping orstaggered as to adjacent radial series. This means that in theperipheral contour of the bufling section, that as one diamond shapedpocket is being opened, an adjacent diamond pocket is of reducedcapacity. It follows that there is accordingly alternate opening ofthese diamond shaped pockets as peripherically disposed, contributing toa uniformity of peripheral condition in pocket capacity and distributionof the abrading or other carried material.

The utility of this bufl may be better appreciated when checked up incomparison with the buff of Yerges Patent, 1,515,818, Nov. 18, 1924,wherein with the same amount of thread and accordingly the same amountof labor, there is produced a harder buff and accordingly one moreresistant as against bufiing action. Furthermore, the entire eliminationof tangential stitching lines avoids productionof hard places in thebuff periphery, local to such lines for working flat. This means, ofcourse, a more symmetrical buff with greater production possibilitiestherefrom for efiiciency in operation.

What is claimed and it is desired to secure by Letters Patent is:

In witness whereof I affix my signature. HARRY ZIMMERMAN.

